城市污水混合垃圾渗滤液脱氮试验研究  

EXPERIMENTAL STUDY ON NITROGEN REMOVAL OF LANDFILL LEACHATE AND URBAN WASTEWATER

作　　者：石明岩[1] 冯兆继[1] 余建恒 王少林 夏耿东 

机构地区：[1]广州大学土木工程学院,广州510006 [2]广州市大坦沙污水处理厂,广州510163

出　　处：《环境工程》2010年第5期39-42,46,共5页Environmental Engineering

基　　金：广州市科技计划项目(2007J1-Q411);广州大学新苗计划项目(20071002)

摘　　要：采用倒置A2/O工艺处理垃圾渗滤液与城市污水混合后的污水脱氮。正交试验得到,水力停留时间是影响混合污水脱氮和有机物去除的控制因素;理论最优运行参数是HRT为9 h、ρ(DO)为2 mg/L、R为80%、r为200%,该工况下COD、NH3-N和TN的平均去除率分别为77.4%、97.2%和62.4%,出水浓度可稳定地达到GB18918-2002《城镇污水处理厂污染物排放标准》一级A标准。The reversed A2 /O process was used for nitrogen removal of landfill leachate and municipal wastewater.The results showed that HRT was the key factor for nitrogen and organics removal efficiency by orthogonal experiment.On conditions of HRT 9 h,DO 2.0 mg /L,R 80%,r 200%,the effect of organics and nitrogen removal was the best,and the average removal rate of COD,NH3-N,TN were 77.4%,97.2% and 62.4%;meanwhile the effluent concentration could steadily meet A-level of the first-order of the＂Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant＂.

关 键 词：倒置A2/O工艺 垃圾渗滤液 城市污水 脱氮 正交试验 水力停留时间 

分 类 号：X703[环境科学与工程—环境工程]